Ce ee a TT 
GREENMAN, — GENUS GALIUM. 461 
G. canescens, HBK. Stems procumbent, nearly glabrous below, 
spreading-villous above: leaves ovate, 8 to 10 mm. long, 4 to 5 mm. 
broad, short-acuminate, 3-nerved, membranous, spreading-villous upon 
either surface, and upon the midrib beneath, ciliate, later somewhat gla- 
brate: flowers axillary, solitary or terminating the branches in threes: 
corolla glabrous ; lobes ovate, subacuminate. — Nov. Gen. & Spee. iii. 336. 
No Mexican specimens of this species have been seen by the author. 
Ghiesbreght’s no. 886 from Chiapas, referred by Hemsley, Biol. Cent.- 
Am. Bot. ii. 64, to the above species, is best referred, as pointed out 
by Dr. Watson, Proc. Am. Acad. xviii. 99, to G. uneinulatum, DC., 
var. obstipum. The above description is drawn from Jameson’s speci- 
| _ men collected in the Andes of Ecuador in 1859, which corresponds well 
with the original description. 
+ ~ Flowers sessile. 
ll. G. proliferum, Gray. Annual, simple or branching from 
the base: stems ascending or erect, 1 to 4 dm. high, shortly hirsute- 
pubescent, or nearly glabrous: leaves ovate or oblong-ovate, the lower- 
most often broadly ovoid and subpetiolate, obtuse, spreading-hirsute upon 
either surface, often nearly or even quite glabrous: flowers sessile, ter- 
minating the rather short lateral subhorizontally spreading branches, the 
lateral branches often proliferous, bearing a second or even a third flower: 
Corolla white, small: fruit about 3 mm. in breadth on extremely short 
recurved pedicels, subtended by two or four upturned leaf-like bracts. — 
Pl. Wright. ii. 67, & Syn. Fl. N. A. i. pt 2, 87. G. virgatum, var. 
diffusum, Gray, Pl. Wright. i. 80.— New Mexico, Wright, nos. 1112 
(type), 281; Texas, El Paso, Dr. Dieffendorfer, also collected in the 
Same locality by Vasey in 1881; Arizona, hills near Tucson, 28 April, 
3, Pringle, no. 15, on the foothills of the Santa Rita Mountains, 13 
May, 1884, Pringle, in part; Nuevo Leon, Guajuco, about 40 km. south- 
“ast of Monterey, March, 1880, Palmer, no. 411. 
Var. Subnudum. Stem and leaves glabrous: fruit only slightly 
hirtellous, — Foothills of the Santa Rita Mountains, Arizona, 13 May, 
1884, P. ringle, in part, 
G. VInGatum, Nutt. Stems simple or branched from the base; 
branches spreading or erect, 1 to 3 dm. high, somewhat virgate, hirsute- 
pubescent upon the slightly thickened angles, occasionally nearly gla- 
brous: leaves oblong-linear to oblong-lanceolate, 1 em. or less in length, 
‘o 3 mm. broad, obtusish, usually hirsutish above and on the midrib 
beneath, ciliate, sometimes nearly glabrous: flowers terminating the 
“xtremely short lateral branches or peduncles, appearing axillary, sub- 
